Foot throttle for motor vehicles



y 4, 1933- L. JACOBY 1,917,036

FOOT THROTTLE FOR MOTOR VEHICLES Filed Aug. 25, 1932 3 Sheets-Sheet 1 25 /o o r 6 ,2,

1011.? Jacob L 5 J 5/ v y July 4, 1933. J -08v 1,917,036

FOOT THROTTLE FOR MOTOR VEHICLES Filed Aug. 25, 1932 3 Sheets-Sheet 2 LAC ale

the post A at the upper portion thereof by a bolt 16. The clamp is provided with outwardly extending arms 17. An elongated lever 18 has its upper end pivoted between the arms 14 on a bolt 19. This lever is offset so as to extend down in front of the slot 12 of the bracket 10 (the teri'n front having relation to the front end of the motor vehicle). The lever 18 is provided at its lower end with an integral crossbar or bracket 20, which is suitably fastened as by welding, riveting, or the like, to the rear side of a throttle plate or shoe 21.

' By observing Figures 1 and 2, it will be seen that the lever 18 is disposed forwardly of the brake pedal B and that the major portion of the shoe lies in front of said pedal. However, the rear portion of the shoe is one end of the brake pedal and it is to be particularly noted that the shoe is placed in such close proximity to the pedal that the foot of the driver may be engaged with the face of said shoe when resting upon the brake pedal. The shoe is curved transversely and extends above and below the brakepedal.

The lower end of the lever 18 is bent so as to not only hold the shoe 21 in proper relation to the pedal, but so that the shoe may be given a downward inclination away from the pedal. By this arrangement the lever will be per-mitt d to swing toward the pedal when the driver depresses the same, because said inclination will permit the lever to swing toward the pedal wh'le the shoe remains in contact with the foot of the driver.

I This is one of the important features of the invention and assures automatic closing of the "throttle when the driver depresses the brake pedal to apply the brakes.

A pivot stud22 is adjustably fastened in the slot 12 of the bracket 10. An arm 23 is rotatably confined on the stud against the front side of the bracket. A pinion 245 is made integral with or is fastened to the arm so as to rotate around said stud and is spaced from the lever 18. The lever carries a T-shaped segmental rack bar 25 secured thereto by bolts 26 and spaced therefrom by a shim 27. The bar has vertical slots 28 so that its teeth 29 may be adjusted with relation to the teeth of the pinion 24, which they engage. Referring to Figures 2 and 3, it will be obvious that when the lever 18 is swung to the right, the teeth 29 of the rackbar 25 will rotate the pinion 2% in a. clockwise direction, whereby the arm 23 will. be swung downwardly.

The upper end of a vertical pitman 30 is pivoted to the outer end of the arm and the lower end of the nitman nivotezil to a clamp 31 secured to the shank of the accelerator C. hen the arm 23 is swung downwardly the pitman 80 will depress the same manner as if the accelerator had been depressed in the usual way.

It will be noted that the radius of the are through which the segmental rack bar 25 swings is several times greater than the radius of the pinion 2e, and thus a very slight swing of the lever 18 will cause an amplified swing of the arm 23. This structure is advantageous and has two functions. First, the extreme length of the lever 18 and its advantage in leverage permits the shoe 21 to be displaced with a minimum effort, and, second, a slight movement of the shoe produces an amplifiedmovement of the pitman 30 and a like depression of the throttle C. It is not necessary for the driver to remove his foot from the brake pedal to operate the throttle. He' merely has to shift or swing his foot to the right (Figure 2), so as to impart a slight lateral movement to the shoe 21, whereby thelever 18 will be swung and such slight movement will be amplified in the swinging of the arm 23, whereby the throttle C will be proportionately depressed.

In using the device, the driver keeps his foot constantly on the pedal B. In this position the ball of the foot will be over the pedal and the toe portion will project forwardly of the pedal. The side of the foot between the ball and the toe portion will be in contact with the shoe 21. Thus, by a slight shifting or rocking movement of the foot, the shoe may be easily swung to the right (Figure The necessary movement will be so slight that it will not be necessary for the driver to shift his foot from the brake pedal.

Owing to the downward inclination of the shoe, the spring (not shown) of the throttle will actuate the parts so that the face of the shoe will constantly remain in contact with the foot of the driver when the brake pedal is depressed, thereby swinging the lever 18 to the left (Figure 2), which will reverse the travel of the arm and pitman and automatically close the throttle. This is a safety feature and permits instant application of the brakes without moving or changing the position of the drivers foot and at the same time automatically closing the throttle.

When the brake pedal is fully depressed to apply the brakes and the throttle closed, the inclined face of the shoe 21 will overhang the drivers foot and consequently when pressure on the pedal is rel-eased and the brake spring returns the pedal with the drivers foot thereon, the shoe will be shifted to the right, owing to its inclination, thereby opening the throttle automatically and without any additional efiort on the part of the driver. Should the driver, upon depressing the pedal, decide that the motor should be speeded up rather than to apply the brakes, he has only to release the pressure on the of depression of the foot throttle, together with. the force contemplated as necessary to operate the device. This also applies to the second-form shown in Figures 8 to 12.

The pivoting of the levers 18 and 35 above thevbrake pedal is an important feature. If

--the operating lever is pivoted below the top of the brake pedal, as has been the practice inthe prior art, the operation of such a lever becomes more vdiflicult as the pedal is depressed and the drivers foot comes nearer to the pivot point of said lever. When the pivot point of the lever is placed above the brake pedal,,the drivers foot moves further away from the pivot point as the pedal is depressed,

thereby increasing the leverage and making the operation easier.

The description which has been given re-,

cites more or less detail of a particular embodiment of the invention, which is set forth as new and useful, however, I desire it understood that the invention is not limited to such exact details of construction, because it is manifest that changes and modifications may be made without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent, is: v I

,1. In. an auxiliarythrottle attachment for motor vehicles, a support for attachment to the vehicle, a lever pivoted on the support s bracket, an operating connection between the segmental gear and the lever, a pinion mount- 1 I ed on the bracket and in mesh with the gear,

an'arin attached to the pinion, and a link connected to the arm and-having means for attachment to a foot throttle.

3. In a foot throttle for motor vehicles, a brake pedal, a support, a lever pivoted to the support above the brake pedal, said lever extending downward alongside and at'an angle to the plane of said pedal, a throttle operating member, and a gearing interposed between the lever and the operating member and connected therewith.

i 4. In a foot throttle for motor vehicles, the

combination with the brake pedal, of a support for attachment to the Vehicle, a lever pivoted to the support above the brake pedal 7 and extending downward alongside and at an angle to the plane of said pedal, an upright shoe carried by the lever'positioned in juxta-position to and at one side of the brake pedal and operated by the operators foot whilenupon the pedal, a connection for at;

ltachment to the vehicle throttle, and means arranged and operated by the lever for actuating the connection to operate the throttle s with an increased amplitude as compared with the movement of the shoe, whereby only aslight lateral movement of the operators foot is required to actuate the throttle, H

5, In a foot throttle for motor vehicles, the combination with the brake pedal, of a support arranged to be attached to the vehicle, a lever-pivoted to the support above the brake pedaland extending downward v alongside and at an angle to the plane of said pedal, a shoe carried by the lever in j uxta-position to the side of the pedal, 1 a throttle actuating member for attachment to the throttle, and operating means connected with the lever and the member for operating said member when the lever is swung andarthe lever, wherebya slight movement, of the shoe will impartla greater movement; to the member. H a a s 6, In a foot throttle attachment for motor vehlcles, a support, an elongated lever pivoted atone end to the support, a-shoe carried by the other end of the lever whereby when the support ismounted above the brake pedal the shoe may be located atone side of the 1 pedal, a fulcrum bracket, an arm pivoted on the bracket, a pinion secured to the arm around its pivot, arack bar carried by the lever and engagingthe pinion, and apitman pivoted to thearm and having means at its free end for attaching to a foot throttle.

n 7. In a foot throttle formotor vehicles, the combination with the brake pedal, of a support arranged to be attached to the vehicle,-a

lever pivoted to the support above the brake pedal and extending downward alongside and at an angle to the plane of said pedal, a

shoe mounted on the lever in j uxta-position to the side of the pedal andhavin its face inclined downwardly and aWayfrorn said pedal, whereby the lever and shoe may swing toward the pedal when the latter is depressed with the operators foot in engagement with the shoe, a throttle actuating member for attachment to the throttle, and-operating means connected with the lever and the member for operating said member when the lever is swung and arranged to amplify the movement imparted to the lever, whereby'a slight lateral movement of the shoe will impart a greater movement to the member; v

8. In a foot throttle for motor vehicles, ,a clamp arranged to be attached to a steering post, a fulcrum bracket arrangedt-o be attached to a steering post, an elongated, lever pivoted at one endxtothe clamp,'a hroad faced shoe carried bythe other end of the lever, an arm pivoted 'on'the-bracket, a pinion fastened to the arm around its' pivot, arack bar fastened, on the lever intermediate its ranged to amplify the movement imparted to 7 i and engegingj theljoinion, and fafpitrnen Y vhaving one? end pivotedg to the"- zit-n1. end itsf other end provided vvith means for atte'ch Iing to-afoot throttle.

' lever havi'ngnn operating 'shoewnear "ts ,9. A fo'ot throttle fornlotojrfi may be ztta'ched to the steeringipost of'a imoalongside the brake pe dal and in -meg direction of the, steering-posti-vvhen t'he r port i s mounted 'oniLthe steer-ingjpost 10. In a r foot throttle I the combination-"With a brakepedal, "of asi p- I port for attachmentto.avehiole, an operating lever pivotedi above thepedal and extending 'clwvnvvard alongsideand atanangl'e 'to the i? plane of said pedal, a shoeon the lower end of the, lever in juXtaL-position tothe brake pedal so as to be' engaged:bythedrivefls foot hile? yrest'ingonflseid pedal, e' throttle actuating lnernber, anderneans for transmitting motion;

, from the lever to thememben-theshoev'having an inclined face for overhanging the pedal,

I whereby when the drivers foot. is resting on extending downward alongside-ande't en enfg'le tofthe planeof the brake'pedal, 'a throttle actuating n1e1nber, means interposed between the lever" and member f for transmitting fend amplifying lng'jti'on fronl the operating Ine m i' said pedal andenge'gin'gthe shoe, thefthrottle an operating-lever pivotedto the support; and

her to the dot-netting lever, and, a shoe niount ed on the operating le ver end having an line .clinedl 'gface overhanging the ibrekei'pedel,"

whereby when the drivers footYis-restingon 'saidpedal in engagement With-the fa ce'roff said shoe, the'operating lever will 'beiauto-yjj 1 rnatioally swung ,bothfupon the depression 1 i of the pedal aswe1ryrsupon its return;

12. In e foot throttle for motor vehi'des support for attalchmentto a motor'vehi'cle; ex

lever, a pinion mounted onthe support, a

,. r l gear segll e-ntconnected with and actuated by the-swingof the lever the segment having a eon'side'rablygreeterredins than the pinion; an arm I connected with? and swung by the pinion, e throttleactuating-member pivoted? I to the arm, anda shoeattaohedltothejleverf su e upp v g vm ahsw ebyi p I v i e, I I .geaLrIsegment-eonneetedlwithzindectuatedjby .tofvehicleebo've'the brakepedal, a lev rpivoted on the support extending downvv'ard considerably greaterradius than the p'i nion,- t 0 t. t 7

- enjar neonneoted ithand swung by theY' pinion,*'aj throttle actnetingnleinber pivotedf toillflarm' flalldj a shoe' attachedyto' the lever 1; I .v I I I hdjztoent one end tl1ereof,. vvhereby e swing "freeffend ffor engage'1'1'1 eI 1l ;F' by the' -fdriv- :ers foot, 3 throttle, -Oprating :Jnemtien, and means for transmittingn otion and emplifying said InOtiQnf fr m-the leverito the ."nlember.

4.1g; A-footthrottleforcinotbrvvehie1es, eom 'Q prisingia snppor -11; be;--etmch pivoted"on the snp-port ezitendingcdownward located alongside; the pedal fonkangage'ment 3 the, tlriwiefis foot,a: throttle operating froni the v lever to the member."

plane of f the "pedal; e shoe; mountedon the I lever 'fandflloeztted adjacent}thepedelfa; t I I I ,i a [throttle operating 1ne1nber,iandfafgearing 4 I 11.; Ina foot throttlefor"motor vehicles,

- the combination with a'brake'pedehof a sup-I I I I I I I I I, ing'nremb'erand eonnectedtherewith..' port attached 'to'rthe vehlcleabovethe brake,

; *1 16. A 01; throttle vfor motor -,v ehiole s,"corn rprising; a; support having: means whereby f it, may be zitteol1ed tojfthe steering post of" motor vehicle abovethe brake .pedal; a l eVerI 1 I bra lever" to the 1ne1nber.-j

brstke pedehesupporQfalever pivoted tether; vSupport above thebrak'e pedztl 'seid' leverj t nding downward'iand intersecting the gplane of the pedal assho e mountedonthe --;5 1'

I end "'eonneoted :therevvitln oftheshoeo'euses amplifiedswing of'the l3,"Inst-footthrottleformotor vehioles iay 1 portfoi' :ettachn entito armor-ori- Vehicl at lever, pinionq inolinted; on thesupport, aj

the swing ofthet leverjthe segment having II t t'fhaving'.nieans wherebyfit I to, the-Z st' e' ng 'jfiost" offa' ove the-"brake "pedal," a lever motor vehicle In:

and {Lg-3n I angle, the plane; ofigthetpedel when the support is moun'ted on the steering" post, .esaidi' leve'r:lhaving an operating shoe inem'ber, andfme'en's for transmitting motion I v 15.tf[n av foot throttle' forinotor I brake; pedal, a support," a, lever pivoted (to.

I I I I I I thesupportsbovethe brake pedal, saidlever- F W-ill be close'df'upon the depress on offsa-ld v pedal and --openedupon thef 'release of said pedal,ellwithoutjshi'fting ofthe driver sfoot on'said pedztl. Y

extending downward andfinterseotin g the interposed between t he lever and the operat- 1 i i pivoted on'fthe' supportextendingidownwetrdi It v. d'a cent and: intersecting the plan'eti'of the kepedallwhen the supportis'monnted on the steering post, for; engagement the 'driverls" foot; throttle operating ne1nber',. and rneensjfor transmittinginotion fronrthe;

17. In affootthrbttle telnet;wine,t

lever loce'ted alongside and inclined down" wa dendtutwm d the peglel' ,"athrottl'e 1 i v v 1 Illse on W m r Leffii; my sig t-rt; f 

